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animation login form

animation login form

An animated login form enhances the user experience by making the interaction visually engaging and modern. Below is a breakdown of key animation techniques used in animated login forms, plus examples you can use or customize.

This tailwind example is contributed by Nicole Shalom, on 24-May-2025. Component is made with Tailwind CSS v3. It is responsive.

Form

Author Nicole Shalom

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Enterprise Auth Portal</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    }

:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --secondary: #64748b;
      --success: #059669;
      --warning: #d97706;
      --error: #dc2626;
      --gray-50: #f8fafc;
      --gray-100: #f1f5f9;
      --gray-200: #e2e8f0;
      --gray-300: #cbd5e1;
      --gray-400: #94a3b8;
      --gray-500: #64748b;
      --gray-600: #475569;
      --gray-700: #334155;
      --gray-800: #1e293b;
      --gray-900: #0f172a;
      --white: #ffffff;
      --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
      --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
      --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    }

body {
      min-height: 100vh;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      font-size: 14px;
      line-height: 1.5;
      color: var(--gray-700);
    }

.auth-container {
      width: 100%;
      max-width: 420px;
      background: var(--white);
      border-radius: 16px;
      box-shadow: var(--shadow-xl);
      overflow: hidden;
      animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

@keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(40px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

.auth-header {
      padding: 48px 32px 32px;
      text-align: center;
      background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
      border-bottom: 1px solid var(--gray-200);
    }

.company-logo {
      width: 64px;
      height: 64px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      border-radius: 12px;
      margin: 0 auto 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      font-weight: 700;
      color: var(--white);
      box-shadow: var(--shadow-lg);
    }

.auth-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
      letter-spacing: -0.025em;
    }

.auth-subtitle {
      color: var(--gray-600);
      font-size: 16px;
      font-weight: 400;
    }

.form-tabs {
      display: flex;
      background: var(--gray-100);
      border-bottom: 1px solid var(--gray-200);
    }

.tab-button {
      flex: 1;
      padding: 16px 24px;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 600;
      color: var(--gray-500);
      cursor: pointer;
      transition: all 0.2s ease;
      position: relative;
    }

.tab-button.active {
      color: var(--primary);
      background: var(--white);
    }

.tab-button.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
    }

.tab-button:hover:not(.active) {
      color: var(--gray-700);
      background: var(--gray-50);
    }

.form-content {
      padding: 32px;
    }

.form-section {
      margin-bottom: 32px;
    }

.section-title {
      font-size: 13px;
      font-weight: 600;
      color: var(--gray-500);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 16px;
    }

.sso-buttons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 24px;
    }

.sso-button {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      padding: 12px 16px;
      border: 1px solid var(--gray-300);
      border-radius: 8px;
      background: var(--white);
      color: var(--gray-700);
      font-size: 14px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }

.sso-button:hover {
      border-color: var(--gray-400);
      background: var(--gray-50);
      transform: translateY(-1px);
      box-shadow: var(--shadow);
    }

.sso-button:active {
      transform: translateY(0);
    }

.form-divider {
      display: flex;
      align-items: center;
      margin: 24px 0;
      color: var(--gray-500);
      font-size: 13px;
      font-weight: 500;
    }

.form-divider::before,
    .form-divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--gray-300);
    }

.form-divider span {
      padding: 0 16px;
      background: var(--white);
    }

.form-group {
      margin-bottom: 24px;
    }

.form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--gray-700);
      margin-bottom: 8px;
    }

.form-input {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--gray-300);
      border-radius: 8px;
      font-size: 15px;
      background: var(--white);
      transition: all 0.2s ease;
      color: var(--gray-900);
    }

.form-input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
    }

.form-input::placeholder {
      color: var(--gray-400);
    }

.form-input.error {
      border-color: var(--error);
      box-shadow: 0 0 0 3px rgb(220 38 38 / 0.1);
    }

.input-error {
      display: block;
      color: var(--error);
      font-size: 12px;
      margin-top: 6px;
      font-weight: 500;
    }

.form-options {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }

.checkbox-group {
      display: flex;
      align-items: center;
      gap: 8px;
    }

.form-checkbox {
      width: 16px;
      height: 16px;
      border: 1px solid var(--gray-300);
      border-radius: 4px;
      cursor: pointer;
      position: relative;
      background: var(--white);
    }

.form-checkbox.checked {
      background: var(--primary);
      border-color: var(--primary);
    }

.form-checkbox.checked::after {
      content: '✓';
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: var(--white);
      font-size: 10px;
      font-weight: bold;
    }

.checkbox-label {
      font-size: 14px;
      color: var(--gray-600);
      cursor: pointer;
      user-select: none;
    }

.forgot-link {
      color: var(--primary);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
    }

.forgot-link:hover {
      text-decoration: underline;
    }

.form-button {
      width: 100%;
      padding: 14px 20px;
      background: var(--primary);
      color: var(--white);
      border: none;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s ease;
      position: relative;
    }

.form-button:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-lg);
    }

.form-button:active {
      transform: translateY(0);
    }

.form-button:disabled {
      background: var(--gray-300);
      color: var(--gray-500);
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

.form-button.loading {
      color: transparent;
    }

.form-button.loading::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 20px;
      height: 20px;
      margin: -10px 0 0 -10px;
      border: 2px solid transparent;
      border-top: 2px solid var(--white);
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }

@keyframes spin {
      to { transform: rotate(360deg); }
    }

.security-info {
      background: var(--gray-50);
      border: 1px solid var(--gray-200);
      border-radius: 8px;
      padding: 16px;
      margin-top: 24px;
    }

.security-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--gray-700);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

.security-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      font-size: 13px;
      color: var(--gray-600);
    }

.security-feature {
      display: flex;
      align-items: center;
      gap: 6px;
    }

.form-footer {
      padding: 24px 32px;
      background: var(--gray-50);
      border-top: 1px solid var(--gray-200);
      text-align: center;
    }

.footer-text {
      font-size: 13px;
      color: var(--gray-500);
      line-height: 1.6;
    }

.footer-links {
      margin-top: 12px;
      display: flex;
      justify-content: center;
      gap: 24px;
    }

.footer-link {
      color: var(--primary);
      text-decoration: none;
      font-size: 13px;
      font-weight: 500;
    }

.footer-link:hover {
      text-decoration: underline;
    }

.form-slide {
      display: none;
      animation: fadeIn 0.3s ease;
    }

.form-slide.active {
      display: block;
    }

@keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

.notification {
      position: fixed;
      top: 20px;
      right: 20px;
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: 8px;
      padding: 16px 20px;
      box-shadow: var(--shadow-xl);
      z-index: 1000;
      transform: translateX(400px);
      transition: transform 0.3s ease;
      max-width: 320px;
    }

.notification.show {
      transform: translateX(0);
    }

.notification.success {
      border-left: 4px solid var(--success);
    }

.notification.error {
      border-left: 4px solid var(--error);
    }

.notification.warning {
      border-left: 4px solid var(--warning);
    }

.notification-content {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

.notification-icon {
      font-size: 18px;
      flex-shrink: 0;
    }

.notification-text {
      font-size: 14px;
      color: var(--gray-700);
      font-weight: 500;
    }

/* Responsive Design */
    @media (max-width: 480px) {
      .auth-container {
        margin: 0;
        border-radius: 0;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
      }

.form-content {
        flex: 1;
        padding: 24px;
      }

.auth-header {
        padding: 32px 24px 24px;
      }

.sso-buttons {
        grid-template-columns: 1fr;
      }

.form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }

.notification {
        top: 10px;
        right: 10px;
        left: 10px;
        transform: translateY(-100px);
        max-width: none;
      }

.notification.show {
        transform: translateY(0);
      }
    }

/* Password Strength Indicator */
    .password-strength {
      margin-top: 8px;
    }

.strength-bar {
      height: 4px;
      background: var(--gray-200);
      border-radius: 2px;
      overflow: hidden;
      margin-bottom: 8px;
    }

.strength-fill {
      height: 100%;
      transition: all 0.3s ease;
      width: 0%;
    }

.strength-weak { background: var(--error); width: 25%; }
    .strength-fair { background: var(--warning); width: 50%; }
    .strength-good { background: var(--success); width: 75%; }
    .strength-strong { background: var(--primary); width: 100%; }

.strength-text {
      font-size: 12px;
      font-weight: 500;
    }

.strength-weak-text { color: var(--error); }
    .strength-fair-text { color: var(--warning); }
    .strength-good-text { color: var(--success); }
    .strength-strong-text { color: var(--primary); }
  </style>
</head>
<body>
  <div class="auth-container">
    
    <div class="auth-header">
      <div class="company-logo">C</div>
      <h1 class="auth-title" id="authTitle">Welcome to CoreAuth</h1>
      <p class="auth-subtitle" id="authSubtitle">Secure access to your enterprise account</p>
    </div>

<div class="form-tabs">
      <button class="tab-button active" onclick="switchForm('login')">Sign In</button>
      <button class="tab-button" onclick="switchForm('signup')">Create Account</button>
    </div>

<div id="loginForm" class="form-slide active">
      <div class="form-content">
        
        <div class="form-section">
          <div class="section-title">Single Sign-On</div>
          <div class="sso-buttons">
            <button class="sso-button" onclick="ssoLogin('google')">
              <svg width="18" height="18" viewBox="0 0 24 24">
                <path fill="#4285F4" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
                <path fill="#34A853" d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
                <path fill="#FBBC05" d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
                <path fill="#EA4335" d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
              </svg>
              Google
            </button>
            <button class="sso-button" onclick="ssoLogin('microsoft')">
              <svg width="18" height="18" viewBox="0 0 24 24">
                <path fill="#f25022" d="M1 1h10v10H1z"/>
                <path fill="#00a4ef" d="M13 1h10v10H13z"/>
                <path fill="#7fba00" d="M1 13h10v10H1z"/>
                <path fill="#ffb900" d="M13 13h10v10H13z"/>
              </svg>
              Microsoft
            </button>
          </div>
        </div>

<div class="form-divider">
          <span>or continue with email</span>
        </div>

<form onsubmit="handleLogin(event)" id="loginFormElement">
          <div class="form-group">
            <label class="form-label">Email Address</label>
            <input type="email" class="form-input" placeholder="name@company.com" required id="loginEmail" />
            <span class="input-error" id="loginEmailError"></span>
          </div>

<div class="form-group">
            <label class="form-label">Password</label>
            <input type="password" class="form-input" placeholder="Enter your password" required id="loginPassword" />
            <span class="input-error" id="loginPasswordError"></span>
          </div>

<div class="form-options">
            <div class="checkbox-group">
              <div class="form-checkbox" onclick="toggleCheckbox(this)"></div>
              <span class="checkbox-label">Keep me signed in</span>
            </div>
            <a href="#" class="forgot-link" onclick="showForgotPassword()">Forgot password?</a>
          </div>

<div class="security-info">
          <div class="security-title">
            🔒 Your data is protected
          </div>
          <div class="security-features">
            <div class="security-feature">
              <span>✓</span> 256-bit SSL encryption
            </div>
            <div class="security-feature">
              <span>✓</span> SOC 2 Type II certified
            </div>
            <div class="security-feature">
              <span>✓</span> GDPR compliant
            </div>
            <div class="security-feature">
              <span>✓</span> Multi-factor authentication
            </div>
          </div>
        </div>
      </div>
    </div>

<div id="signupForm" class="form-slide">
      <div class="form-content">
        
        <div class="form-section">
          <div class="section-title">Quick Setup with SSO</div>
          <div class="sso-buttons">
            <button class="sso-button" onclick="ssoLogin('google')">
              <svg width="18" height="18" viewBox="0 0 24 24">
                <path fill="#4285F4" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
                <path fill="#34A853" d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
                <path fill="#FBBC05" d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
                <path fill="#EA4335" d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
              </svg>
              Google
            </button>
            <button class="sso-button" onclick="ssoLogin('microsoft')">
              <svg width="18" height="18" viewBox="0 0 24 24">
                <path fill="#f25022" d="M1 1h10v10H1z"/>
                <path fill="#00a4ef" d="M13 1h10v10H13z"/>
                <path fill="#7fba00" d="M1 13h10v10H1z"/>
                <path fill="#ffb900" d="M13 13h10v10H13z"/>
              </svg>
              Microsoft
            </button>
          </div>
        </div>

<div class="form-divider">
          <span>or create account manually</span>
        </div>

<div class="form-group">
            <label class="form-label">Work Email</label>
            <input type="email" class="form-input" placeholder="john@company.com" required id="signupEmail" />
            <span class="input-error" id="signupEmailError"></span>
          </div>

<div class="form-group">
            <label class="form-label">Password</label>
            <input type="password" class="form-input" placeholder="Create a strong password" required id="signupPassword" oninput="checkPasswordStrength(this.value)" />
            <div class="password-strength" id="passwordStrength" style="display: none;">
              <div class="strength-bar">
                <div class="strength-fill" id="strengthFill"></div>
              </div>
              <div class="strength-text" id="strengthText"></div>
            </div>
            <span class="input-error" id="signupPasswordError"></span>
          </div>

<div class="form-options">
            <div class="checkbox-group">
              <div class="form-checkbox" onclick="toggleCheckbox(this)" id="termsCheckbox"></div>
              <span class="checkbox-label">I agree to the <a href="#" class="forgot-link">Terms of Service</a> and <a href="#" class="forgot-link">Privacy Policy</a></span>
            </div>
          </div>

<button type="submit" class="form-button" id="signupBtn" disabled>
            Create Account
          </button>
        </form>
      </div>
    </div>

<div class="form-footer">
      <p class="footer-text">
        Your account is protected by enterprise-grade security measures including end-to-end encryption and regular security audits.
      </p>
      <div class="footer-links">
        <a href="#" class="footer-link">Help Center</a>
        <a href="#" class="footer-link">Contact Support</a>
        <a href="#" class="footer-link">Security</a>
      </div>
    </div>
  </div>

<div class="notification" id="notification">
    <div class="notification-content">
      <div class="notification-icon" id="notificationIcon"></div>
      <div class="notification-text" id="notificationText"></div>
    </div>
  </div>

// Update active tab
      tabButtons.forEach(btn => btn.classList.remove('active'));
      event.target.classList.add('active');

// Switch forms
      if (formType === 'login') {
        loginForm.classList.add('active');
        signupForm.classList.remove('active');
        title.textContent = 'Welcome to CoreAuth';
        subtitle.textContent = 'Secure access to your enterprise account';
      } else {
        signupForm.classList.add('active');
        loginForm.classList.remove('active');
        title.textContent = 'Join CoreAuth';
        subtitle.textContent = 'Create your secure enterprise account';
      }
    }

// Checkbox toggle functionality
    function toggleCheckbox(checkbox) {
      checkbox.classList.toggle('checked');
      
      // Enable/disable signup button based on terms acceptance
      if (checkbox.id === 'termsCheckbox') {
        const signupBtn = document.getElementById('signupBtn');
        signupBtn.disabled = !checkbox.classList.contains('checked');
      }
    }

// Password strength checker
    function checkPasswordStrength(password) {
      const strengthContainer = document.getElementById('passwordStrength');
      const strengthFill = document.getElementById('strengthFill');
      const strengthText = document.getElementById('strengthText');

if (password.length === 0) {
        strengthContainer.style.display = 'none';
        return;
      }

strengthContainer.style.display = 'block';

let strength = 0;
      let feedback = '';

// Length check
      if (password.length >= 8) strength++;
      if (password.length >= 12) strength++;

// Character variety checks
      if (/[a-z]/.test(password)) strength++;
      if (/[A-Z]/.test(password)) strength++;
      if (/[0-9]/.test(password)) strength++;
      if (/[^A-Za-z0-9]/.test(password)) strength++;

// Remove previous strength classes
      strengthFill.className = 'strength-fill';
      strengthText.className = 'strength-text';

if (strength <= 2) {
        strengthFill.classList.add('strength-weak');
        strengthText.classList.add('strength-weak-text');
        feedback = 'Weak password';
      } else if (strength <= 3) {
        strengthFill.classList.add('strength-fair');
        strengthText.classList.add('strength-fair-text');
        feedback = 'Fair password';
      } else if (strength <= 4) {
        strengthFill.

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